摘要
为了进一步提升基于RSS(received signal strength)的WiFi室内定位算法的精度和可靠度,本文对比研究了基于标准差(standard deviation,STD)的AP(access points)选取算法和基于信号丢失率(signal loss rate,SLR)的AP选取算法,并提出了新的基于STD和SLR融合的AP选取算法。实验结果表明,基于STD的AP选取算法定位精度受到AP子集个数的影响,当子集个数大于6并继续增加时,定位精度变化不再明显;基于SLR的AP选取算法耗时最少;新的基于STD和SLR融合的AP选取算法定位耗时略大于融合前的两种AP选取算法,但其定位精度和可靠性明显优于其他两种AP选取算法。
In order to further improve the accuracy and reliability of RSS-based WiFi indoor location algorithm,this paper first contrasts the AP selection algorithm based on STD(standard deviation)and the AP selection algorithm based on SLR(signal loss rate)and then proposes a new AP selection algorithm based on STD and SLR fusion.The results show that:STD-based AP selection algorithm is affected by the number of AP subsets,when the number of subsets is greater than 6 and continue to increase,the positioning accuracy is no longer obvious;SLR-based AP selection algorithm is least time-consuming;The new AP selection algorithm based on STD and SLR fusion is slightly larger time-consuming than the two AP selection algorithms before fusion,but its positioning accuracy and reliability are obviously better than the other two AP selection algorithms.
作者
鲁晶
花向红
张伟
王华强
陈鹏
唐兆鹏
LU Jing;HUA Xianghong;ZHANG Wei;WANG Huaqiang;CHEN Peng;TANG Zhaopeng(32022 Troops,Wuhan 430074,China;School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China;Key Laboratory of Digital Land in Jiangxi Province,East China University of Science and Technology,Nanchang 330013,China)
出处
《测绘地理信息》
2020年第1期33-36,共4页
Journal of Geomatics
基金
江西省数字国土重点实验室开放研究基金(DLLJ201702)
精密工程与工业测量国家测绘地理信息局重点实验室开放研究基金(PF2017-9).
关键词
WiFi室内定位
AP选取
标准差
信息丢失率
WiFi indoor location
AP(access points)selection
standard deviation(STD)
signal loss rate(SLR)
作者简介
第一作者:鲁晶,工程师,研究方向为工程测量和室内外定位。E-mail:6803080@qq.com;通讯作者:花向红,教授,研究方向为多传感器信息融合无缝导航定位。E-mail:xhhua@sgg.whu.edu.cn
